Contactum Defender B Board DDB Miniature Circuit Breaker 1-Pole 40A Type B 250V AC 10 kA Breaking Capacity CPB1040B

Contactum CPB1040B Miniature Circuit Breaker is a 1-pole device designed for protection and automation of electrical circuits in residential, commercial, and light industrial applications. With a 40 ampere current rating, this circuit breaker provides reliable overload and short-circuit protection while operating at a rated voltage of 250V AC. It features type B tripping characteristics that make it suitable for circuits with low inrush current, commonly found in lighting and general power circuits.

The breaker is part of the Defender B Board series and the DDB range, characterized by robust build quality and adherence to IEC 61439-3 standards, ensuring operational safety and consistency. Its DIN rail mounting facilitates quick and secure installation inside standard electrical distribution boards.

Shrouded terminals provide enhanced safety by preventing accidental contact with live parts during wiring and maintenance activities. The unit is rated with an IP4X ingress protection, offering effective defense against solid objects and dust entry, which suits varied industrial and commercial environments.

Designed to operate reliably within a temperature range of -5 to 40 degrees Celsius, this miniature circuit breaker ensures performance stability in diverse climate conditions. Its compact dimensions, 415 mm width and 120 mm depth, allow it to fit efficiently in electrical panels without occupying excessive space.

Type B tripping characteristic tailored for general electrical protection. 40A current rating ideal for moderate load circuits. DIN rail mounting supports standard electrical panel installations. Shrouded terminal design for safer operation and maintenance.

Meets IEC 61439-3 standards for safety and quality assurance. IP4X rating provides resistance against dust ingress. Suitable for ambient operating temperatures from -5°C to 40°C. Compact form factor measuring 415mm width by 120mm depth.

This miniature circuit breaker is widely used in industrial, commercial, electrical distribution, automation, and HVAC systems for circuit protection and operational safety. The Contactum Defender B Board DDB CPB1040B model is engineered for compliance and durability in accordance with relevant electrical standards, ensuring an optimal blend of performance and protection.

Explore a broad range of Miniature Circuit Breakers and electrical protection devices at EnvMart to meet diverse electrical installation needs with trusted quality and service.